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authorJonas Schievink <[email protected]>2021-06-09 16:16:52 +0100
committerJonas Schievink <[email protected]>2021-06-09 16:16:52 +0100
commit05b3a4bc93cf6555857bfc68b5e85830a0da80dc (patch)
tree4bd5ad6b0b9a6a4a653ad8511122fa542021f588 /crates/proc_macro_test/imp/src
parent5f592f4f58a6e1e1db0f920af34a2f569b65017c (diff)
Build test-macros in a build script
Diffstat (limited to 'crates/proc_macro_test/imp/src')
-rw-r--r--crates/proc_macro_test/imp/src/lib.rs48
1 files changed, 48 insertions, 0 deletions
diff --git a/crates/proc_macro_test/imp/src/lib.rs b/crates/proc_macro_test/imp/src/lib.rs
new file mode 100644
index 000000000..4b26d2472
--- /dev/null
+++ b/crates/proc_macro_test/imp/src/lib.rs
@@ -0,0 +1,48 @@
1//! Exports a few trivial procedural macros for testing.
2
3use proc_macro::TokenStream;
4
5#[proc_macro]
6pub fn fn_like_noop(args: TokenStream) -> TokenStream {
7 args
8}
9
10#[proc_macro]
11pub fn fn_like_panic(args: TokenStream) -> TokenStream {
12 panic!("fn_like_panic!({})", args);
13}
14
15#[proc_macro]
16pub fn fn_like_error(args: TokenStream) -> TokenStream {
17 format!("compile_error!(\"fn_like_error!({})\");", args).parse().unwrap()
18}
19
20#[proc_macro_attribute]
21pub fn attr_noop(_args: TokenStream, item: TokenStream) -> TokenStream {
22 item
23}
24
25#[proc_macro_attribute]
26pub fn attr_panic(args: TokenStream, item: TokenStream) -> TokenStream {
27 panic!("#[attr_panic {}] {}", args, item);
28}
29
30#[proc_macro_attribute]
31pub fn attr_error(args: TokenStream, item: TokenStream) -> TokenStream {
32 format!("compile_error!(\"#[attr_error({})] {}\");", args, item).parse().unwrap()
33}
34
35#[proc_macro_derive(DeriveEmpty)]
36pub fn derive_empty(_item: TokenStream) -> TokenStream {
37 TokenStream::new()
38}
39
40#[proc_macro_derive(DerivePanic)]
41pub fn derive_panic(item: TokenStream) -> TokenStream {
42 panic!("#[derive(DerivePanic)] {}", item);
43}
44
45#[proc_macro_derive(DeriveError)]
46pub fn derive_error(item: TokenStream) -> TokenStream {
47 format!("compile_error!(\"#[derive(DeriveError)] {}\");", item).parse().unwrap()
48}